CA1231043A - Device for continuously cutting out a waste strip between two usable strips of sheet structures - Google Patents
Device for continuously cutting out a waste strip between two usable strips of sheet structuresInfo
- Publication number
- CA1231043A CA1231043A CA000471267A CA471267A CA1231043A CA 1231043 A CA1231043 A CA 1231043A CA 000471267 A CA000471267 A CA 000471267A CA 471267 A CA471267 A CA 471267A CA 1231043 A CA1231043 A CA 1231043A
- Authority
- CA
- Canada
- Prior art keywords
- cutting
- cutting wheel
- shaft
- pressing devices
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
- B26D1/24—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
- B26D1/245—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter for thin material, e.g. for sheets, strips or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper Feeding For Electrophotography (AREA)
- Nonmetal Cutting Devices (AREA)
- Paper (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
ABSTRACT
Apparatus for continuously cutting a waste strip between two usable strips of a sheet employs two rotating cutting devices each provided with a cutting edge arranged opposite to the other and counterparts arranged opposite to and each overlapping the respective cutting devices. The cutting devices are arranged symmetrically and opposite to each other on a shaft, and at least a pair of pressing devices is advanced on either side of the cutting device as far as the cutting plane.
The apparatus permits the simultaneous production of at least two superimposed paper products which are in a ready-for-use condition.
Apparatus for continuously cutting a waste strip between two usable strips of a sheet employs two rotating cutting devices each provided with a cutting edge arranged opposite to the other and counterparts arranged opposite to and each overlapping the respective cutting devices. The cutting devices are arranged symmetrically and opposite to each other on a shaft, and at least a pair of pressing devices is advanced on either side of the cutting device as far as the cutting plane.
The apparatus permits the simultaneous production of at least two superimposed paper products which are in a ready-for-use condition.
Description
_ 3 - ~3~3 "A device for continuously cutting out a waste strip be-tweet two usable strips of sheet structures"
_ _ The invention relates to a device for continuously cut-tin gout a waste strip between two usable strips of sheet structures by means of two rotating cutting devices provided each with a cutting edge arranged opposite to the other one and of counterparts arranged opposite to and each overlapping the respective cutting devices.
The DEEPS 641,235 has made known a device of this kind in which from a continuously advanced paper web there is cut out a waste strip such that first the one edge of the waste strip is cut-in by a cutting knife arranged on a shaft in connection with a counter knife, whereas a second knife, which is arranged on a spaced-apart shaft carrying on the other side a symmetrical counter knife, cuts-in the second side of the waste strip.
This cutting method is not suitable for stacked or imbrue-catedly advanced paper products or cardboard products since in these cases the paper or cardboard layers have to be held together during the cutting process.
The invention has been based on the problem to make it possible that waste strips can be cut out in a sails-factory manner even in those cases in which more than , /4 I
one paper or cardboard layer are to be cut simultaneously.
According to one aspect of this invention there is provided a device for continuously cutting out a waste strip between two usable strips of sheet structures, comprising a circular cutting wheel rotatable mounted on a first shaft, said cut-tying wheel having symmetrical cutting edges about its air-cumference; a pair of counterpart wheels rotatable mounted on a second shaft said counterpart wheels each being post-toned closely adjacent to and in overlapping relationship to one of said cutting edges; and at least one pair of sheet structure pressing devices, at least one of said pressing devices being mounted on either side of said cutting wheel and being adapted for compressing said sheet structure in the region of said cutting wheel.
It is also possible to provide more than two cutting devices so as to manufacture e.g. also three usable strips of sheet structures in the form of prospectuses or catalogues or also in the form of advertising prints or the like.
The counterparts can be in the form of counter knives which are separately arranged on a shaft. Though this has also become known from the DEEPS 641,235, in case of the invent live device there the counter knives can be provided beneath the twin cutting device so that less space is required.
It is furthermore possible to arrange one additional press-in device adjacent to each of the counter knives. The cutting device, according to one embodiment, consists of two interconnected plate-shaped knives, and in this case the counter knives can relative to the cutting device be driven in the opposite direction.
According to a modified embodiment, the cutting device ~31~
is provided either with a conc~vc grinding or with two oppositely directed bevel grindings; the cutting device can also be in the form of a disk-type milling cutter.
If there is provided a suction device extending to the cutting region to receive the shavings or chips, such suction device can be in the form of a tube and can be secured to the frame of the counter knifes.
In order to provide the possibility to use the inventive cutting device also in already existing paper processing systems, the device, which is in the form of a double-knife or a disk-type milling cutter, can together with its plane pressing device pair be mounted at a swivel arm; in this case, it is useful to mount the swivel arm at a supporting structure which is detachably mount-able to an under frame of the cutting unit.
The drawing shows several strongly schematisized repro-sensations of exemplifying embodiments of the invention which hereinafter are described in more detail; it is shown in Fig. 1 a front view on the assembled constructional units, Fig. 2 a side view along the line 2-2 in Fig. 1, Fig. 3 a detail of a modified embodiment, and Fig. 4 a detail of a third embodiment.
Two vertical consoles 1 and 2 of a supporting structure are connected with each other by a shaft 3 in bow-like - 6 - ~3~43 manner. The open space between the two consoles is wide enough to permit mounting thereof above a provided cut-tying unit so that continuously advanced, imbricated paper stacks can be cut either on one side or on both sides. The two cutting implements which are not shown are provided between the respective consoles and two actual constructional units 5,6 of the cutting device.
The two constructional units 5 and 6, which hereinafter are described in more detail, can also be manufactured using a different mounting device to be usable as indepen-dent cutting device.
Shaft 3 is adapted to hold swivel arm 8 which is pivot-able about the axis 7 and is e.g. fork-shaped and carries a disk-type milling cutter 9 so that it is rotatable and drivable. The disk-type milling cutter 9 is provided with a concave grinding 10 and cooperates, relative to the imbricated layers 11 advanced vertically to the drawing plane, with two counter disks 12,13. These counter disks or counter knifes overlap with the disk-type milling cutter 9, as can be seen from fig. 2, so that at the location where the outer surface and the inner surface of the disk-type milling cutter and of the counter knifes coincide with each other, there are made cuts in the imbricated layers which cause cutting edges as sharp and straight-lined that the usable strips provided by the cutting devices each obtain ready-for-use edges.
Since during the continuous conveyance of the supreme-posed paper product of sheet structure, there may possibly occur, at the high speed of the disk-type milling cutter and of the counter knifes, burns of the paper the pressing device 14 described hereinafter is constructed as follows.
~L23~4;~
The upper portion 15 of the pressing device 14 is Semite-Rockwell provided on either side of the disk-type milling cutter 9 and consists of an endlessly conveyed belt 20 which runs over two end rollers 21,22. In the region 20 (i.e. in engagement with the paper product advanced in imbricated layers), there are provided additional smaller supporting rollers between the two end rollers.
The conveying belt 20 is turned round the end rollers 21,22 and their guides at the smaller rollers (not shown) such that said rollers each are constructed as individual small units, whereby development of heat in the cutting zone is avoided.
In a similar way, the lower portion of the pressing device is made of two belts 30 which are symmetrical and are facing the cutting piano and each are turned round end rollers 31 or 32 provided each in pairs.
Between the end rollers 31,32, there are provided in the upper portion, i.e. at the level of the cutting devices, smaller supporting rollers which together with the rotating belts cause the sheet structures to be cut to be uniformly pressed.
The counter knifes 12 and 13, which are rotatable about an axis 34, are driven in a direction opposite to that of the disk-type milling cutter. The two lower portions of the pressing device 30 are mounted at supporting walls which are mounted on a slide 41 which is movable in the direction towards the axis 34.
The swivel arm 8 can be pivoted into the region between the two cutting implements (not shown) of the cutting unit or out of this region, as required, and forms with the consoles 1 and 2 a constructional unit including also the upper portion of the pressing device 15.
- 8 - ~31~3 The lower portion of the cutting devices forming an independent constructional unit includes the two counter knifes 12,13, the lower portion of the pressing device -and the corresponding holding means.
In case of the embodiment shown in fig. 3, the swivel arm 50 is provided with two counter knifes 51,52 which are synchronously drivable, whereas in the lower portion the disk-type milling cutter 52 is mounted to be rotatable about a shaft 54.
The upper portion and the lower portion of the pressing devices 55 are exchanged relative to the embodiment shown in fig. 1. us in case of fig. 1, the two portions of the pressing device 55 are tensioned relative to each other or are subjected to prestressing so as to make possible to precisely advance and hold the imbrica-t-Ed paper layers in the cutting zone.
The embodiment shown in fig. 4 is based in principle on the same arrangement of the constructional members as described in connection with figs. 1 and 2.
The swivel arm 60, which is in the form of a yoke, car-ryes two separate knifes 62 and 63 which are mounted to be rotatable about an axis 61 and are tensioned rota-live to each other and whose cutting surfaces are provide Ed at the external sides.
The knifes 62,63, which are provided with a bivouac grind 64, are arranged symmetrically to each other and rotate between two counter knifes 65 and 66 which in turn are drivable via a shaft 67 in a direction opposite to that of the knifes 62 and 63.
_ _ The invention relates to a device for continuously cut-tin gout a waste strip between two usable strips of sheet structures by means of two rotating cutting devices provided each with a cutting edge arranged opposite to the other one and of counterparts arranged opposite to and each overlapping the respective cutting devices.
The DEEPS 641,235 has made known a device of this kind in which from a continuously advanced paper web there is cut out a waste strip such that first the one edge of the waste strip is cut-in by a cutting knife arranged on a shaft in connection with a counter knife, whereas a second knife, which is arranged on a spaced-apart shaft carrying on the other side a symmetrical counter knife, cuts-in the second side of the waste strip.
This cutting method is not suitable for stacked or imbrue-catedly advanced paper products or cardboard products since in these cases the paper or cardboard layers have to be held together during the cutting process.
The invention has been based on the problem to make it possible that waste strips can be cut out in a sails-factory manner even in those cases in which more than , /4 I
one paper or cardboard layer are to be cut simultaneously.
According to one aspect of this invention there is provided a device for continuously cutting out a waste strip between two usable strips of sheet structures, comprising a circular cutting wheel rotatable mounted on a first shaft, said cut-tying wheel having symmetrical cutting edges about its air-cumference; a pair of counterpart wheels rotatable mounted on a second shaft said counterpart wheels each being post-toned closely adjacent to and in overlapping relationship to one of said cutting edges; and at least one pair of sheet structure pressing devices, at least one of said pressing devices being mounted on either side of said cutting wheel and being adapted for compressing said sheet structure in the region of said cutting wheel.
It is also possible to provide more than two cutting devices so as to manufacture e.g. also three usable strips of sheet structures in the form of prospectuses or catalogues or also in the form of advertising prints or the like.
The counterparts can be in the form of counter knives which are separately arranged on a shaft. Though this has also become known from the DEEPS 641,235, in case of the invent live device there the counter knives can be provided beneath the twin cutting device so that less space is required.
It is furthermore possible to arrange one additional press-in device adjacent to each of the counter knives. The cutting device, according to one embodiment, consists of two interconnected plate-shaped knives, and in this case the counter knives can relative to the cutting device be driven in the opposite direction.
According to a modified embodiment, the cutting device ~31~
is provided either with a conc~vc grinding or with two oppositely directed bevel grindings; the cutting device can also be in the form of a disk-type milling cutter.
If there is provided a suction device extending to the cutting region to receive the shavings or chips, such suction device can be in the form of a tube and can be secured to the frame of the counter knifes.
In order to provide the possibility to use the inventive cutting device also in already existing paper processing systems, the device, which is in the form of a double-knife or a disk-type milling cutter, can together with its plane pressing device pair be mounted at a swivel arm; in this case, it is useful to mount the swivel arm at a supporting structure which is detachably mount-able to an under frame of the cutting unit.
The drawing shows several strongly schematisized repro-sensations of exemplifying embodiments of the invention which hereinafter are described in more detail; it is shown in Fig. 1 a front view on the assembled constructional units, Fig. 2 a side view along the line 2-2 in Fig. 1, Fig. 3 a detail of a modified embodiment, and Fig. 4 a detail of a third embodiment.
Two vertical consoles 1 and 2 of a supporting structure are connected with each other by a shaft 3 in bow-like - 6 - ~3~43 manner. The open space between the two consoles is wide enough to permit mounting thereof above a provided cut-tying unit so that continuously advanced, imbricated paper stacks can be cut either on one side or on both sides. The two cutting implements which are not shown are provided between the respective consoles and two actual constructional units 5,6 of the cutting device.
The two constructional units 5 and 6, which hereinafter are described in more detail, can also be manufactured using a different mounting device to be usable as indepen-dent cutting device.
Shaft 3 is adapted to hold swivel arm 8 which is pivot-able about the axis 7 and is e.g. fork-shaped and carries a disk-type milling cutter 9 so that it is rotatable and drivable. The disk-type milling cutter 9 is provided with a concave grinding 10 and cooperates, relative to the imbricated layers 11 advanced vertically to the drawing plane, with two counter disks 12,13. These counter disks or counter knifes overlap with the disk-type milling cutter 9, as can be seen from fig. 2, so that at the location where the outer surface and the inner surface of the disk-type milling cutter and of the counter knifes coincide with each other, there are made cuts in the imbricated layers which cause cutting edges as sharp and straight-lined that the usable strips provided by the cutting devices each obtain ready-for-use edges.
Since during the continuous conveyance of the supreme-posed paper product of sheet structure, there may possibly occur, at the high speed of the disk-type milling cutter and of the counter knifes, burns of the paper the pressing device 14 described hereinafter is constructed as follows.
~L23~4;~
The upper portion 15 of the pressing device 14 is Semite-Rockwell provided on either side of the disk-type milling cutter 9 and consists of an endlessly conveyed belt 20 which runs over two end rollers 21,22. In the region 20 (i.e. in engagement with the paper product advanced in imbricated layers), there are provided additional smaller supporting rollers between the two end rollers.
The conveying belt 20 is turned round the end rollers 21,22 and their guides at the smaller rollers (not shown) such that said rollers each are constructed as individual small units, whereby development of heat in the cutting zone is avoided.
In a similar way, the lower portion of the pressing device is made of two belts 30 which are symmetrical and are facing the cutting piano and each are turned round end rollers 31 or 32 provided each in pairs.
Between the end rollers 31,32, there are provided in the upper portion, i.e. at the level of the cutting devices, smaller supporting rollers which together with the rotating belts cause the sheet structures to be cut to be uniformly pressed.
The counter knifes 12 and 13, which are rotatable about an axis 34, are driven in a direction opposite to that of the disk-type milling cutter. The two lower portions of the pressing device 30 are mounted at supporting walls which are mounted on a slide 41 which is movable in the direction towards the axis 34.
The swivel arm 8 can be pivoted into the region between the two cutting implements (not shown) of the cutting unit or out of this region, as required, and forms with the consoles 1 and 2 a constructional unit including also the upper portion of the pressing device 15.
- 8 - ~31~3 The lower portion of the cutting devices forming an independent constructional unit includes the two counter knifes 12,13, the lower portion of the pressing device -and the corresponding holding means.
In case of the embodiment shown in fig. 3, the swivel arm 50 is provided with two counter knifes 51,52 which are synchronously drivable, whereas in the lower portion the disk-type milling cutter 52 is mounted to be rotatable about a shaft 54.
The upper portion and the lower portion of the pressing devices 55 are exchanged relative to the embodiment shown in fig. 1. us in case of fig. 1, the two portions of the pressing device 55 are tensioned relative to each other or are subjected to prestressing so as to make possible to precisely advance and hold the imbrica-t-Ed paper layers in the cutting zone.
The embodiment shown in fig. 4 is based in principle on the same arrangement of the constructional members as described in connection with figs. 1 and 2.
The swivel arm 60, which is in the form of a yoke, car-ryes two separate knifes 62 and 63 which are mounted to be rotatable about an axis 61 and are tensioned rota-live to each other and whose cutting surfaces are provide Ed at the external sides.
The knifes 62,63, which are provided with a bivouac grind 64, are arranged symmetrically to each other and rotate between two counter knifes 65 and 66 which in turn are drivable via a shaft 67 in a direction opposite to that of the knifes 62 and 63.
Claims (10)
1. A device for continuously cutting out a waste strip between two usable strips of sheet structures, comprising a circular cutting wheel rotatable mounted on a first shaft, said cutting wheel having symmetrical cutting edges about its circumference; a pair of counterpart wheels rotatable mounted on a second shaft said counterpart wheels each being positioned closely adjacent to and in overlapping relationship to one of said cutting edges; and at least one pair of sheet structure pressing devices, at least one of said pressing devices being mounted on either side of said cutting wheel and being adapted for compressing said sheet structure in the region of said cutting wheel.
2. The apparatus of claim 1 wherein said counterpart wheels each respectively have a cutting edge adjacent to said cutting wheel cutting edges.
3. The apparatus of claim 1, further comprising a further pair of pressing devices, one adjacent each of said counterpart wheels.
4. The apparatus of claim 1, wherein said cutting wheel further comprises two symmetrical circular blades aligned closely adjacent one another on said first shaft.
5. The apparatus of claim 1, further comprising means for rotating said first shaft and said second shaft in opposite directions.
6. The apparatus of claim 1, wherein said cutting wheel further comprises a concave periphery about its circumference.
7. The apparatus of claim 6, wherein said cutting wheel further comprises a disk milling cutter.
8. The apparatus of claim 1, further comprising a suction tube hazing an opening proximate said cutting wheel.
9. The apparatus of claim 1, further comprising a swivel arm mounted to a frame, said swivel arm having an end connected to said sheet structure pressing devices.
10. The apparatus of claim 9, wherein said counterpart wheels are detachably mounted to said frame and said cutting wheel is mounted to said swivel arm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843401958 DE3401958C2 (en) | 1984-01-20 | 1984-01-20 | Device for the continuous separation of sheet-like structures lying one on top of the other |
| DEP3401958.5-26 | 1984-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1231043A true CA1231043A (en) | 1988-01-05 |
Family
ID=6225500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000471267A Expired CA1231043A (en) | 1984-01-20 | 1984-12-31 | Device for continuously cutting out a waste strip between two usable strips of sheet structures |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT394965B (en) |
| CA (1) | CA1231043A (en) |
| CH (1) | CH666651A5 (en) |
| DE (1) | DE3401958C2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3721423A1 (en) * | 1987-06-29 | 1989-01-19 | Gaemmerler Hagen | CUTTING DEVICE FOR AT LEAST TWO-LAYER SURFACES, IN PARTICULAR PAPER PRODUCTS |
| DE3809962A1 (en) * | 1988-03-24 | 1989-10-05 | Kampf Gmbh & Co Maschf | Longitudinal cutting machine |
| AT397481B (en) * | 1990-02-21 | 1994-04-25 | Boehler Ybbstalwerke | CIRCULAR KNIFE SCISSORS |
| CA2636961A1 (en) | 2007-07-11 | 2009-01-11 | Ferag Ag | A method and device for separating continuously conveyed material webs |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE219593C (en) * | ||||
| US1067269A (en) * | 1910-12-17 | 1913-07-15 | Burt Co Ltd F N | Cutting mechanism. |
| US1139355A (en) * | 1912-11-09 | 1915-05-11 | M D Knowlton Co | Slitting-machine. |
| DE641235C (en) * | 1935-03-23 | 1937-01-25 | Goebel A G | Device for longitudinal cutting of webs of paper, cardboard, metal, cell horn or the like. |
| US3144216A (en) * | 1961-09-12 | 1964-08-11 | Du Pont | Apparatus for slitting film and removing the srtrips from the cutting zone under unequal tension |
| DE1228914B (en) * | 1965-04-17 | 1966-11-17 | Hermann Hieke Dipl Ing | Circular strip scissors for cutting preferably very thin strips and foils |
| DE1231106B (en) * | 1965-07-23 | 1966-12-22 | Jagenberg Werke Ag | Device for longitudinal cutting of running material webs |
| DE2915582A1 (en) * | 1979-04-18 | 1980-10-30 | Grapha Graphische Maschinen Ha | METHOD FOR CUTTING SHEETS, STACKS OF PLANTS, STAPLES OR THE LIKE, AND DEVICE FOR CARRYING OUT THE METHOD |
| DE3022772A1 (en) * | 1980-06-18 | 1982-01-07 | Andreas Neumann | Printed matter trimming device - has sets of rotary cutting blades working together with sheet-clamping conveyor belts |
-
1984
- 1984-01-20 DE DE19843401958 patent/DE3401958C2/en not_active Expired
- 1984-12-10 AT AT390984A patent/AT394965B/en not_active IP Right Cessation
- 1984-12-31 CA CA000471267A patent/CA1231043A/en not_active Expired
-
1985
- 1985-01-14 CH CH15585A patent/CH666651A5/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATA390984A (en) | 1992-01-15 |
| CH666651A5 (en) | 1988-08-15 |
| AT394965B (en) | 1992-08-10 |
| DE3401958C2 (en) | 1986-04-03 |
| DE3401958A1 (en) | 1985-07-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |